Varicocele and infertility.
D002404:Catheterization; D002933:Cineradiography; D006801:Humans; D007248:Infertility, Male / Q000209:etiology*; D008297:Male; D013094:Spermatozoa / Q000032:analysis; D014646:Varicocele / Q000150:complications* / Q000601:surgery*; D014680:Veins